ProPEX chrome-plated PEX Stop Valves are available in either straight or angle stop configurations. These PEX stop valves are used for point-of-use shut-off at the fixture. Both valves connect 1/2" PEX Tubing to 3/8" O.D. Risers. Compression inserts and rings for the 3/8" riser connections are included with the valves. ProPEX Tool is required to make the 1/2" ProPEX connections. ProPEX Rings must be purchased separately.